How to Stop Icicles From Forming on Your Roof and Gutters


Although icicles hanging from your gutters is a picturesque winter scene, they pose a danger to your house and your family. So, how do you stop icicles from forming on your roof?

To stop icicles from forming on your roof and gutters, ensure that your house is well ventilated and insulated and your gutters are clean and free of debris. Installing heating cables on your roof can also prevent icicles from forming.

While this is an adequate fix, there are still many things you need to know to stop icicles from forming on your roof and gutters.

We will walk you through why icicles form, how to get rid of them, and how to prevent them from forming in the future. 

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Here’s a Quick Pro Tip!

Insulating your house properly is the best way to prevent icicles from forming on your gutters.

However, sometimes we need a quick fix! Try these products to get rid of those icicles instantly:

1. Frost King Heating Cables – An excellent product to prevent icicles from forming.

2. Snow Roof Rake – A helpful tool to knock down the icicles.

Why Do I Have So Many Icicles on My Gutters?

Icicles form on your gutters when snow accumulates on your roof during winter. The snow melts to water and runs down your roof entering your gutters. The water gets stuck in your gutters for many reasons, causing an overflow.

Due to the freezing temperatures, the water will freeze as it overflows from your gutters, creating icicles. However, this is not how it should be. Your gutters should drain the water from your roof, not accumulate water. 

Your gutter will trap water for many reasons. But, no matter the reason, icicles forming in your gutters is terrible news, and understanding why it happens is your first step to fixing the problem. 

What Does It Mean When You Have Icicles Hanging From Your Roof?

When icicles hang from your roof, it indicates an insulation problem in your house. The heat from your home should not reach your attic. It causes the snow on your roof to melt and run down to your gutters. 

When the water reaches the gutters, it will freeze there since the gutters are much colder than your roof.  This indicates an insulation problem in your house because you should not be losing heat through your roof; it should stay in your house.

Is It Bad to Have Icicles on Your House?

It is dangerous to have icicles form on your house. It indicates that you have roofing and ventilation issues, but it also increases the chance of someone getting hurt by a falling icicle, and icicles can cause structural damages and rotting timber. 

Icicles are pretty and story-book-like, but they are not practical and are something to be avoided. If you have icicles on your house, it is dangerous for anyone walking under them.

It also indicates that you have insulation problems which means you are likely paying way more for heating than you should be. 

Dangers of Having Icicles

If you have icicles on your house, you are opening yourself up to the possibility of your gutter breaking off from your house, creating ice dams, timber damage, and water leakage into your house. 

Icicles have a lot of potential to cause extensive damage to your house and damage anyone who unfortunately crosses the path of a falling icicle. Additionally, icicles sometimes indicate that you also have an ice dam, which fosters its own stack of problems. 

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Do Icicles Mean Poor Insulation?

Icicles are one of the most prominent indicators that your house has poor insulation. If you are losing heat through your ceiling due to poor insulation, it will cause your roof to be warmer than it should be, creating icicles.

Because of this phenomenon, icicles are, in a way, a blessing to let you know that you are losing heat from your house, not only causing icicles but also a higher heat bill.

Fixing your insulation problems is one of the best ways to avoid icicles in the future.

Why Is My House the Only One With Icicles?

Your house may be the only house in your neighborhood with icicles for a few reasons. Icicles happen when your house has poor insulation, or your gutters are severely backed up, not letting the water run through.

If your house is older, this may be why your insulation isn’t up to snuff like the rest of the houses in your neighborhood. You may also have skipped out on your pre-winter gutter cleaning, which can cause some problems going into the winter. 

Why Do Icicles Form?

Icicles can form for a couple of different reasons, either separately or combined. The main reason is poor insulation in your house that allows heat to escape through your ceiling.

When this happens, the snow melts immediately from your roof and causes a lot of water to flow off. The water freezes when it reaches your gutters since the gutters are much colder than your roof.

The water begins to freeze in your gutters, creating an ice dam. All new water rushing into your gutters has nowhere to go, so it starts flowing over the ice dam and then freezing in the air. 

What Causes Icicles on Houses?

Icicles are created on houses either because of poor insulation in your house, backed-up gutters, or both. Essentially, icicles are formed when the water flowing from your roof has nowhere to go, so it builds up and then starts overflowing. 

Due to the below-freezing temperatures, the overflowing water will freeze on its way down. This essentially creates icicles. 

Apart from poor insulation, icicles can also form if your gutters are blocked from debris, such as dirt and leaves. This will cause the water to back up and eventually freeze, again, not allowing the water to flow freely through the gutter system. 

Can Icicles Damage Gutters?

Icicles do have the potential to damage gutters if they become too large. Large icicles are very heavy and can tear your gutters off of your house. When gutters tear off, the outside of your house can be affected.

The falling gutters can cause the icicles to fall and damage the siding of your house, your window, and any bystanders. This is why it is best to remove any icicles that are forming on your gutters

What Can I Do About Large Icicles on My House?

If you have icicles forming on your house, you need to address your ventilation issues initially. Icicles form when too much heat escapes from your house, causing snow to constantly melt and creating a water flow that is too much for your gutters to maintain in the winter.

As soon as the water reaches your gutters, it will freeze because the gutters are far colder than your heated roof. Therefore, fixing your insulation problem is the main solution for preventing icicle formation. 

You can either tackle this yourself or ask a contractor to pay a visit and inspect your attic. Either way, you need to find out where the heat from your living space is leaking into your attic and adjust your insulation. 

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Should You Leave Icicles Alone?

Not treating formed icicles is a dangerous idea. When icicles become so abundant and large, they have the potential to become so heavy that your gutter falls off. This is a dangerous threat and causes more problems in the future if you don’t get them fixed.

Therefore, it is wise to treat your icicles as soon as you notice there are more than usual. You can knock small icicles off yourself using a rake. You should use special snow removal tools and specific solutions to melt the ice for larger icicles. 

How Do You Knock Down Icicles?

An effective way to knock down icicles is to use a special roof rake, especially one with an extendable arm. Make sure you wear safety goggles and begin knocking down the icicles with your rake.

Extend the roof rake as long as you can so there is enough distance between you and the falling icicles. Then, while wearing protective goggles and gloves, a gentle push to the base of the icicle is enough to free them from the gutters. 

Should You Remove Large Icicles?

Removing large icicles is essential to prevent your gutter from ripping off your house and to prevent icicles from falling on someone. However, icicle removal can be dangerous so hire a professional if you are not comfortable with doing it yourself. 

Professionals are trained to safely remove large, dangerous icicles, but it is possible to do it yourself. So, as long as you feel comfortable and have the appropriate safety equipment and removal tools, you could remove the icicles yourself. 

How Do You Get Rid of Large Icicles?

You can get rid of large icicles by first clearing off the snow on your roof and then melting the ice accumulated in your gutter with calcium chloride. Remember to exercise extreme caution when getting rid of large icicles.

To get rid of the snow on your roof, use a unique snow removal tool such as the Snow Joe Removal Rake. Wear eye protection and even a helmet before raking off the snow since icicles may start falling.

Once all the snow is off, fill a pantyhose or several socks with calcium chloride, such as these ice melting pellets, and place them along your gutter on top of the frozen ice.

This will cause the ice to melt and run through the gutters, causing the icicles to drip away. 

How Do You Stop Icicles From Forming on Gutters?

The main culprit of icicle formations is a poorly insulated attic or ceiling. If you tackle this problem, you will decrease the number of icicles that form on your roof. The second reason is due to gutters that have not been cleaned out.

If you want a one-time, long-term fix, you should fix your insulation problem.

Icicles are forming on your roof because your house is poorly insulated, causing too much heat to escape through your ceiling, ultimately causing too much water to flow down your roof.

Either yourself or a professional, inspect the insulation in your attic and find out where the heat is escaping. Then, either add more insulation or adjust the already existing pieces.

Also, ensure there is proper ventilation, so if hot air does enter, it can escape, leaving only room for cold air. 

Apart from insulation and ventilation, you also need to make sure your gutters are winter-ready.

Before the first snow happens, clean out your gutters from fallen leaves or whatever else may have accumulated during the fall.

This will allow water to flow more freely when the snow melts during the colder seasons. 

If you are dealing with your gutters during the winter, you may also want to check out the blog post we did on if you can mow your lawn in the winter or if should you wait.

Should You Break Icicles off Gutters?

Breaking icicles off gutters is necessary to save your gutters from completely ripping off of your house, which can cause extensive damage. You will also be decreasing the chances of an icicle falling on someone’s head.

Thus, if you have icicles forming on your gutters, you are responsible for getting rid of them.

You don’t want the icicles to become so heavy that your whole gutter falls off, which could catapult the ice dam straight into your neighbor’s window. 

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What Causes Ice Dams?

Ice dams are caused by poorly-insulated houses, snowfall, and outside temperatures that, when combined, cause water to build up and freeze within a gutter, creating an ice dam throughout the gutter. 

Ice dams are dangerous because they become very heavy, which can potentially rip off your gutter from your house. If this ever happens, the once lodged ice damn could propel outwards and potentially damage anything within its path. 

Ice Dam Prevention Products

To prevent ice dams from forming in your gutters, you can buy heat tape/heat cables or calcium chloride. Both mechanisms focus on melting the water in your gutter, so it doesn’t end up freezing.

Heat cables like these on Amazon work really well and are very effective, but use energy and take more time to implement since you have to attach the cables to your roof and along your gutter.

On the other hand, calcium chloride like the one we recommend from Snow Joe is more cost-effective and easier to apply.

However, the overall effect is not as strong as the heat cables, and you may have to re-apply the calcium chloride more often to the ice dams. 

Do Icicles Always Cause Ice Dams?

Contrary to popular belief, icicles don’t cause ice dams. Instead, the opposite is true. Ice dams cause icicles, but ice dams don’t always mean icicles will form. This is often confused because icicle formation is a vicious cycle that sometimes involves an ice dam. 

An ice dam is created when an excess of snow melts off a warm roof and freezes when it reaches the gutter that is below freezing.

Ice continues to build up as more water runs off the roof. Icicles form when water runs over the ice damn and starts to drip. The continuous drips eventually form an icicle.

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Why Are Ice Dams Bad?

Ice dams are destructive because since they are so heavy, they can tear off your gutters, loosen the siding of your house, and even cause water to back up and leak into your house. If you notice an ice dam, you should consider removing it as soon as possible.

Overall, ice dams are dangerous for your safety and the well-being of your house. If your gutters rip off your house, they can bring siding, shingles, or paint along with it.

They can also create water damage on the outside of your house that will eventually leak to the inside of your house. 

How to Quickly Get Rid of Ice Dams

To treat an already developed ice damn in your gutter, you can run hot water over the dam to slowly melt the ice and let it run freely. Or, you can use calcium chloride also to melt the ice.

Removing ice dams can be dangerous so hire a professional if you are uncomfortable doing it yourself. 

To melt the ice using hot water, carefully place a ladder leading to your roof and make your way up. Then, slowly spray the ice dam with hot water either from your hose or from a bucket of water.

Eventually, the ice dam will melt and flow out of your gutter system. 

Another strategy is to fill a pantyhose or several socks with calcium chloride and place them along the ice dam. Again, the salt will break down the ice into water, and, the water will flow freely out of your gutter system.

How Do I Prevent Ice Dams on My Roof?

The most effective way to prevent ice dams from forming on your roof is to address why they form in the first place, which is heat escaping through your roof because of a poorly insulated house. 

By addressing your insulation problems, you will prevent ice dams from forming in the future, and you won’t have to remove any in an emergency situation.

It’s best to tackle the main issue instead of putting out so-called fires every year. 

To do this, check the insulation in your attic and look out for any areas that may not be covered, which may be leaking hot air in. Then, either rearrange your insulation or add more to cover these areas.

If you don’t find anything, you can consider hiring a professional who will have a better eye for these types of things. 

If fixing your insulation is not an option, you can purchase heat tape. Heat tape is a protected cord that you can lay out on your roof and into your gutter that emits heat so the snow won’t freeze in your gutter, eventually creating an ice dam. 

What Is Heat Tape for Gutters?

Heat tape is a protected electrical cord that you can place on your roof and into your gutters to prevent water from freezing and causing an ice dam in your gutter, ultimately resulting in dangerous icicles. 

The heat tape plugs into an outdoor outlet on your house and then runs up to your roof. You then place the heat tape in a zig-zag formation along your roof with the point of the zig-zag in the gutter.

The heat tape will heat prevent any flowing water from freezing.

Heat Cables for Ice Dam Prevention

Using heat cables, also known as heat tape, is an effective way to prevent water from freezing in your gutters, leading to dangerous ice dams. The cables keep the water warm, so it’s not capable of freezing.

The protected electrical cord plugs into an outdoor outlet on your house and then runs up to your roof. Place the heat tape in a zig-zag formation along your roof with the point of the zig-zag in the gutter.

You can also run the heat tape directly on the bottom of the gutter. The heat tape will heat prevent any flowing water from freezing.

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Related Questions

Can I Put Salt on My Roof to Melt Ice?

Using salt to melt ice from your roof is an effective strategy, provided that you use the correct type of salt. Calcium chloride and potassium chloride are good options but avoid calcium chloride as it is too abrasive and will damage your roof. 

Remember that you should only attempt salting your roof if you are comfortable doing so and have a partner with you, ideally on the ground.

Going on your roof during winter is very dangerous, and you should only attempt this if you have someone nearby to help you if you get hurt and if you are comfortable working with the conditions. 

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